淀粉/PS-g-MAH共混体系相容性及降解性能的研究  

Compatibility and Degradation of Starch and MAH-g-PS Blending

作　　者：孙晓巍[1] 台立民[1] 

机构地区：[1]辽宁工程技术大学材料科学与工程系,辽宁阜新123000

出　　处：《中国塑料》2008年第10期38-41,共4页China Plastics

摘　　要：研究了淀粉/马来酸酐接枝聚苯乙烯(PS-g-MAH)共混体系的相容性及降解性能。采用红外光谱对接枝产物进行了表征,并用滴定法测定了产物的接枝率,结果表明 MAH 与 PS 发生了接枝反应。扫描电镜分析表明,当 PS/MAH=95/5时,淀粉/PS-g-MAH 共混体系的相容性最好,接枝率达到最大,为2.27%。最后,对淀粉/PS 和淀粉/PS-g-MAH 共混体系的降解性能进行了比较,结果表明,40 d 后淀粉/PS-g-MAH 共混物的降解率为20.09%,小于淀粉/PS 共混物的降解率。In this article, the compatibility and degradable performance of blends of starch/PS-g-MAH were studied. The grafting was confirmed using infrared spectra and content of MAH graft was determined by titration. The influence of contents of MAH on the compatibility of starch/PS was studied using SEM. It showed that the grafting of MAH significantly improved the compatibility between starch and PS. When PS/MAH = 95/5, the graft rate achieved a maximum value of 2.27 %. The degradable performance of pure starch/PS and starch/MAH-g-PS samples was compared. The degradation rate of starch/PS-g-MAH blending was 20.09 % after 40 d, less than starch/PS.

关 键 词：淀粉 马来酸酐接枝聚苯乙烯 相容性 接枝改性 降解性能 

分 类 号：TQ327.8[化学工程—合成树脂塑料工业]